{
  "manageEntity": {
    "action": "Save",
    "entityId": "1219668067",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5f30c2bce548e0169cebf8037df853fe74db9d23fd0a0e7e6ef25e3d9191a6c8",
    "signature": "0xf745b5bf543a60c78a5ab62154910ef13b52d7687a50df9389707545a8ce0c0a138e1e2d755c84d09592b04f6f3817bd08f7ad02c676f59621097e77f7bbf4a21b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}